module top_module (
    input [4:0] a, b, c, d, e, f,
    output [7:0] w, x, y, z );//

    // assign { ... } = { ... };
	//assign {w,x,y,z} = {a,b,c,d,e,f,2'b11}
    assign w = {a[4:0], b[4:2]};
    assign x = {b[1:0], c[4:0],d[4]};
    assign y = {d[3:0], e[4:1]};
    assign z = {e[0], f[4:0],2'b11};
	
endmodule


